About Us Since January 2000, our family has operated “Sandstone Works”. Located in rural western Pennsylvania, the Anita area quarry and production shop serves the entire United States and Canada. Our yard and production shop is located just north of Anita on State Route 310. In 2005 we expanded into a flag stone quarry near Indiana, Pa. Our operation boasts a 600 ton splitter and two saws. We are capable of handling a variety of geometry requirements including profiles and angles. Our splitter can handle material 72 inches x 26 inches.